Add docs for 15340
Add docs for 15340

BS3 commits: e41127efe4f9f9acffe023a70a749a9cd8c8b977

up2vs/todc-bootstrap,mozillo/todc-bootstrap,2947721120/googlebt4,ztx1491/todc-bootstrap,todc/todc-bootstrap,2947721120/todc-bootstrap,todc/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap